Salivary Gland Stones


Salivary gland stones, also called sialolithiasis, refer to mineralized masses or calcifications that form within the ducts of the salivary glands. These stones can block the flow of saliva into the mouth, leading to discomfort, swelling, and, in some cases, infection of the affected salivary gland.

Understanding Salivary Gland Stones

The human body contains three major salivary glands: the parotid, submandibular, and sublingual glands. These glands produce saliva, an essential fluid that aids in digestion, lubricates the mouth, and protects against certain bacteria. Stones can develop in the ducts of any of these glands, but they are most commonly found in the submandibular gland, which accounts for about 80% to 90% of cases.


Symptoms of Salivary Gland Stones

The onset of a salivary gland stone might first present as a painful lump or swelling in the mouth, particularly in the area below the jaw or in front of the ears. Common symptoms include:

  • Sudden pain while eating, as the production of saliva increases during meals.
  • Swelling in the affected area.
  • Dry mouth or difficulty swallowing.
  • Infection, which may present as redness, warmth, or even pus discharge from the gland.

Causes and Risk Factors

The exact cause of salivary gland stones remains unclear, but several factors may contribute to their development:

  • Dehydration: Reduced fluid intake can lead to thicker saliva, which might precipitate stone formation.
  • Dietary factors: A diet high in calcium can contribute to the formation of calcium-based stones.
  • Medications: Some drugs, especially those that reduce saliva production, may increase the risk.
  • Physical trauma or injury to the salivary ducts or glands.
  • Infections or chronic inflammation of the salivary glands.
  • Structural issues, such as narrow or abnormally formed ducts.

Diagnosis and Detection

Early and accurate diagnosis is crucial for effective management. Typically, the process involves:

  • Physical examination: Checking for tenderness or swelling in the gland area.
  • Imaging: Ultrasound, sialography (a special X-ray using dye), or CT scans can help visualize the stone within the duct.
  • Sialendoscopy: A minimally invasive procedure that employs a tiny camera to examine the inside of the duct and locate the stone.

Treatment Approaches

The choice of treatment largely depends on the size and location of the stone:

  • Conservative Management: For smaller stones close to the opening of the duct, measures like drinking plenty of water, applying warm compresses, or massaging the affected area can encourage the stone to pass naturally.
  • Sialendoscopy: This procedure not only aids in the diagnosis but can also be used to remove the stone, especially if it’s located deep within the duct.
  • Extracorporeal shock wave lithotripsy: This method uses high-frequency sound waves to break the stone into smaller fragments, allowing them to pass more easily.
  • Surgery: In situations where the stone is too large or is causing recurrent problems, surgical removal of the stone or even the entire affected salivary gland may be necessary.

Salivary gland stones, while not life-threatening, can lead to considerable discomfort and potential complications if not addressed timely. Recognizing the symptoms and seeking prompt medical attention can help ensure proper management and relief. With advances in medical techniques, many patients can now benefit from minimally invasive procedures, reducing the need for extensive surgeries and ensuring a quicker recovery. Overall, awareness and early intervention remain key in managing and overcoming the challenges posed by salivary gland stones.